JavaScript has been disabled. This site requires JavaScript for full functionality, please enable. Overview Hwanseon Cave is the largest limestone cave in Asia, formed around 530 million years ago. The cave has very well-developed stalactites, stalagmites and columns named “Beauty Rock”, “Turtle Rock” and “Pot Rock” for their looks. A total of 47 types of animals have been discovered inside Hwanseon Cave and among them, 4 types of animals including the “Hwanseon Blind Beetle (Kurasawatrechus latior) are known to be found only in Hwanseon Cave or to be native organisms of Hwanseon Cave. Hwanseon Cave started operating a monorail service in April, 2010 to make tour easier for the visitors.Natural Monument No. 178 (Designated on June 14, 1966)Opened: October 15, 1997Open Section: 1.6km (Total Length: 6.2km)Inside Temperature: 10 ~ 15℃Cave Size: Entrance – Width: 14m Height: 10mIns...